Bunch building mechanism



8- 1934- H. o. DAVIDSON 1,969,593

I BUNCH BI JILDING MECHANISM Filed Jan. 12, 1933 l 'wl" lllIlIl:

INVENTOR HOBART a DAVIDSON BY'HIS ATTORNEYS Patented Aug. 7, 1934 BUNCHBUILDING MECHANISM Hobart 0. Davidson, Meadville, Pa., assignor to TheViscose Company, Marcus Hook, Pa., a corporation of PennsylvaniaApplication January 12, 1933, Serial No. 651,395

19 Claims.

This invention relates to bunch building mechanisms in apparatus forwinding threads on quills, and has for its main object to providemechanism of this character adapted to build a flat bunch of uniformthickness at the base of the quill.

Other objects will be apparent from the following description inconjunction with the accompanying drawing, in which Figure 1 is aperspective view of a preferred 1o embodiment of the invention, and

Figure 2 is a plan of the same.

The winding machine comprises a frame 4 housing driving means forrotating a quill 5, and for driving a traverse rod 6 havin'g anassociated traverse wheel '7 and cop former 8. A portion of the frame 4carries a bunch builder mechanism including an arm 9 pivoted on astationary part of the mechanism. This mechanism includes a ratchetlO,ratchet pawl '11, ratchet feed pawl 12, and ratchet feed pawl arm 13,details of which parts are more fully described in Quill Patent No.1,809,217 of June 9th, 1931.

A bracket 14 is carried by the traverse rod, the form shown having aflange 15 which is secured to a suitable part of the structure mountedon the traverse rod, such as the thread guide holder 16. This bracket 14extends vertically upward, preferably parallel to the axis of the quill5.

At the, upper end of the bracket 14 is mounted a thread guide element,preferably a roller 1'7 rotatable on a pin 18. A link 19 is pivoted onthe pin 18 and depends therefrom. This link has an car 20 in which isthreaded an adjusting screw 21 engaging the bracket 14 to limit thepivotal movement of the link 19 in the direction toward the bracket 14.p

A second thread guide element, preferably a roller 22 is rotatablymounted on a pin 23 secured o to the lower end of the link 19. Thethread being wound on the quill 5 passes in succession over the rollers1'7 and 22 on to the quill 5.

Associated with the bunch builder mechanism is a bracket 24 which has aflange 25 secured to the arm 9 which is pivoted on part of themechanism. This bracket in the position shown extends vertically upwardparallel to the axis of the quill 5. A slot 26 is formed in the upperpart of the bracket 24, through which passes a pin 2'7 adjustablysecured therein. A hook 28 is pivoted on this pin 27. The hook 28 has aslot 29 adapted to receive the projecting end 30 of the pivot pin 23 forthe second roller.

To begin operation, the bracket 14 is pushed back to the extremeposition on the traverse rod 6, and the hook 28 is fitted over theprojecting end 30. Then the power for the machine is turned on, to startthe winding on the quill 5. The bracket 14 moves with the rod 6, so thatits traverse is the normal stroke of the machine, and the upper or firstroller 17 has the same traverse.

The lower or second roller 22 however, is held back by the extension 30in the slot 29, the link 19 swinging out as the bracket 14 moves. Thetraverse of the second roller is thereby made shorter, as its positionis determined by an are about the stationary pin 2'7. The combinedmotion, due to the traverse of the bracket 14 and the confining actionof the hook 28, resulting in a toggle action of the hook and the link19, is such that the thread is wound uniformly at the base of the quill5 for the desired length.

When the required number of strokes has been made, the action of theratchet 10, ratchet pawl 11, ratchet feed pawl 12, and ratchet feed.pawl arm 13 releases a catch holding the-arm 9 in'position. The springtension which was applied to the arm 9 when it was first moved intoposition causes the arm 9 to move outwardly. Thus the bunch buildermechanism throws the arm 9 out-. wardly, away from the bracket 14,causing the slot 29 to ride off the end of the extension 30, thusreleasing the same; The link 19 is held against the bracket 14 by thetension of the thread 5 running on the quill, the screw 21 serving toposi: tion the second or lower roller 22'relative to the bracket 14. Theyarn is then wound on the quill according to the regular traverse, andthe operation from this point on is governed by the cop former.

It should be noted that with this arrangement the running end is guidedin the same guides during the bunch building operation as during thebalance of the winding operation on the quill.

The length of the bunch to be formed is determined by the position ofthe pin 2'7, as adjusted in the slot 26. Moving the pin 27 toward thebracket 14 adjusts the mechanism toincrease the length of the bunch,while adjustment in the opposite direction shortens the bunch.

The screw 21 is of advantage in locating the correct position of the;heel on the quill. This screw moves the link 19 with respect to thebracket 14 to adjust the position of'the lower roller 22,,so that theposition of the heel may be moved either forward or backward within thelimits allowed.

I claim:

1. In apparatus for winding threads, a thread guide for leading thethread on to a quill, comprising a reciprocating member, a guideelement,

means for normally giving said guide element the same travel as saidreciprocating member, and means cooperating with said guide element forgiving it a shorter travel than that of said member. A

2. In apparatus for winding threads; a reciprocating thread guide forleading the thread on to a quill, comprising two spaced elements overwhich the thread passes at all times, and means coopererating with oneelement for giving it a shorter travel than the other.

3. In apparatus for winding threads, a thread guide for leading thethread on to a quill, comprising two connected rollers over which thethread passes in succession, and means for reciprocating said rollers togive them different travels.

4. In a winding machine, in combination witha traverse rod and abunch'building mechanism, a thread guide, and toggle means non-slidablypivotedto said traverse rod and said bunch building mechanism forrestraining and controlling the motion of said thread guide,

5. In a winding machine, a reciprocating member, an oscillating memberhaving a path transverse to the path of said reciprocating member, athread guide carried by said reciprocating member over which the threadpasses on to a quill, and means having the same travel as saidreciprocating member when said oscillating member is away therefrom andat all times engaging the thread between said guide and said quill andhaving its travel shortened by engagement with said oscillating memberfor causing the winding machine to build a short bunch.

6. In a winding machine, in combination with a traverse rod and an armpivoted ona stationary part of the machine, a thread guide carried bysaid traverse rod, a second thread guide over which the thread passesfrom the first, and means carried by said arm and cooperating with saidsecond thread guide for causing the winding machine to wind a shortbunch, said means being guide to travel with the first.

actuated by said arm to release said second thread 7. In a windingmachine, in combination with a traverse rod and a bunch buildingmechanism, a thread guide roller, means carried by said traverse rod forsupporting the journal of said roller, and means actuated by said bunchbuilding mechanism and engaging the journal'of said roller for causingthe winding machine to wind a short bunch.

8. In a winding machine, in combination with a traverse rod and a bunchbuilding mechanism having an arm, a thread guide roller, means carriedby said traverse rod for supporting said thread guide roller, a secondthread guide roller, and cooperating means carried by said supportingmeans and said arm for supporting and controlling said second threadguide roller to cause the winding machine to build a short bunch.

9. In a winding machine, a. traverse rod, a

bracket carried by said rod, a roller on said bracket, a link pivoted onthe journal of..said

roller to swing in one direction, a second roller journaled on saidlink, and means for limiting the movement of the link in the otherdirection.

10. In a winding machine, a traverse rod, a bracket carried by said rod,a rolleron said an arm, a link having a roller pivoted thereon, meansfor pivotally supporting said link from" said traverse rcd', a hookengaging an abutment on said link, and means for pivotally supportingsaid hook from said arm.

12. In a winding machine provided with a frame and a traverse rod, alink having an abutment, a roller pivoted on said link, means forpivotally supporting said link from said traverse rod, an arm pivoted onsaid frame, and a hook pivoted on said arm and engaging said abutment.

13. In apparatus for winding threads, a reciprocating member, a threadguide carried thereby for leading, the running end of the thread on to aquill during all of the Winding thereof, and means cooperating with saidguide for giving said running end a shorter travel than said member forbuilding a bunch. i

14. An apparatus for winding threads, a traverse rod, a thread guide forleading the thread on to a quill, means cooperating with said threadguide forgiving the thread a shorter travel than said rod to build abunch on said quill, and means for releasing said means whereby the samethread guide gives the running end the same travel as said traverse rodfor the balance of the winding operation on said quill.

15. In a winding machine, a traverse rod, a thread guide carried by saidtraverse rod comprising two guide elements over which the thread passesat all times, in combination with a hook cooperating with the secondthread guide for causing the winding machine to build a short bunch.

16. In a winding machine, a traverse rod, a link pivotally carried bysaid rod, a pair of spaced guide rollers on said link, over which thethread passes on to a quill, and means for retarding one end of saidlink to shorten the travel of one of said rollers and thereby cause thewinding machine to build a short bunch.

17. In a winding machine, a pair of guides in engagement with the threadat all times during the winding operation, and means cooperating withone of said guides for causing the winding machine to wind a shortbunch.

18. In a winding machine, in combination with a traverse rod and a bunchbuilding mechanism,

a link pivotally carried by said traverse rod, a'

thread guide on said link spaced from the pivot thereof, and meansactuated by said bunch building mechanism for moving said link about itspivot and thereby moving said guide thereon in an arc of a circle aboutsaid pivot.

19. In a winding machine, a thread guide, a traverse rod, means fornormally giving said thread guide a rectilinear movement with saidtraverse rod, bunch building mechanism, and means actuated thereby forgiving said guide a shorter travel than said traverse.rod,- saidlastmentioned means including an adjustment for determining the lengthof the bunch.

' HOBART O. DAVIDSON.

